The Windows 10 April 2018 Update will reach end of service on November 12, 2019 for Home and Pro editions. We will begin updating devices running the Windows 10 April 2018 Update starting July 16, 2019 to help ensure that these devices remain in a serviced and secure state. For more information, see the Windows 10, version 1903 section of the release information dashboard.
Reminder: March 12 and April 9 will be the last two Delta updates for Windows 10, version 1803. Security and quality updates will continue to be available via the express and full cumulative update packages. For more information on this change please visit our blog.
Starting with update KB4499183, we are introducing functionality that allows you to decide when to install a feature update. You control when you get a feature update while simultaneously keeping your devices up to date. Feature updates that are available for eligible devices will appear in a separate module on the Windows Update page (Settings > Update & Security > Windows Update). If you would like to get an available update right away, select Download and install now. To find out more about this feature, please go to this blog.
When Windows 10 devices are at, or within several months of reaching, end of service, Windows Update will begin to automatically initiate a feature update. This keeps those devices supported and receiving the monthly updates that are critical to device security and ecosystem health.
Improvements and fixes
This update includes quality improvements. Key changes include:
- Addresses an issue that prevents the operating system from loading new icon files if it encounters an icon file that has a bad format.
- Addresses an issue that prevents Microsoft Edge from opening properly in certain scenarios when you select a link within an application.
- Addresses an issue that prevents the Calculator application from following the Gannen setting when it is enabled. For more information, see KB4469068.
- Addresses an issue that may cause a mouse press and release event to sometimes produce an extra mouse move event.
- Addresses an issue that may cause the user interface to stop responding for several seconds when scrolling in windows that have many child windows.
- Addresses an issue that allows users to disable the sign-in background image when the "Computer\Administrative Templates\Control Panel\Personalization\Prevent changing lock screen and logon image" policy is enabled.
- Addresses an issue that may cause Microsoft Outlook to stop working when closing a mail item.
- Addresses an issue with evaluating the compatibility status of the Windows ecosystem to help ensure application and device compatibility for all updates to Windows.
- Addresses an issue that fails to update a user hive when you publish an optional package in a Connection Group after the Connection Group was previously published.
- Addresses an issue that removes UserRights policies from all users in a security group when you remove a device from a mobile device management (MDM) server or Microsoft Intune deletes a UserRights policy.
- Addresses an issue that may prevent a provisioning package from being applied correctly in some situations when it’s used to invoke the CleanPC configuration service provider (CSP).
- Adds support for a customer configurable safe list for ActiveX controls when using Windows Defender Application Control. For more information, see Allow COM object registration in a Windows Defender Application Control policy.
- Addresses an issue with using Data Protection Application Programming Interface NG (DPAPI-NG) or a group-protected Personal Information Exchange Format (PFX) file. Data you protected using one of these mechanisms on Windows 10, version 1607 and Windows Server 2016 or earlier cannot be decrypted using Windows 10, version 1703 or later.
- Addresses an issue that prevents a user from signing in to a Microsoft Surface Hub device with an Azure Active Directory account. This issue occurs because a previous session did not end successfully.
- Addresses an issue that may prevent Windows Information Protection (WIP) from enforcing encryption on a removable USB drive.
- Addresses an issue that causes Windows Account Manager (WAM) to fail when using a Trusted Platform Module (TPM) and prevents the user from authenticating.
- Addresses an issue that causes Disk Management and DiskPart to stop responding when presenting some removable disks to Windows.
- Addresses an issue with a system that has preboot kernel Direct Memory Access (DMA) protection enabled. When the system starts Windows in safe mode, the system stops working with the error, “DRIVER_VERIFIER_DMA_VIOLATION.”
- Addresses an issue that causes Office 365 applications to stop working after opening when they are deployed as App-V packages.
- Disables Microsoft Visual Basic Script (VBScript) by default in the Internet and Restricted sites zones in Internet Explorer and the WebBrowser control.
- Addresses an issue with programmatic scrolling in Internet Explorer 11.
Addresses an issue that may display the error, “MMC has detected an error in a snap-in and will unload it.” when you try to expand, view, or create Custom Views in Event Viewer. Additionally, the application may stop responding or close. You may also receive the same error when using Filter Current Log in the Action menu with built-in views or logs.
If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.
Known issues in this update
|Certain operations, such as rename, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, “STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)”. This occurs when you perform the operation on a CSV owner node from a process that doesn’t have administrator privilege.|| |
Do one of the following:
|We are investigating reports that a small number of devices may startup to a black screen during the first logon after installing updates.|| |
This issue is resolved in KB4519978.
|Devices may have issues connecting to some Storage Area Network (SAN) devices using Internet Small Computer System Interface (iSCSI) after installing this update. You may also receive an error in the System log section of Event Viewer with Event ID 43 from iScsiPrt and a description of “Target failed to respond in time for a login request.”||This issue is resolved in KB4509478.|
|Devices that start up using Preboot Execution Environment (PXE) images from Windows Deployment Services (WDS) or System Center Configuration Manager (SCCM) may fail to start with the error "Status: 0xc0000001, Info: A required device isn't connected or can't be accessed" after installing this update on a WDS server.|| |
This issue is resolved in KB4512509.
How to get this update
Before installing this update
Microsoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU. For more information, see Servicing stack updates.
Install this update
To download and install this update, go to Settings > Update & Security > Windows Update and select Check for updates.
To get the standalone package for this update, go to the Microsoft Update Catalog website.
For a list of the files that are provided in this update, download the file information for cumulative update 4503288.